2008年汶川地震震后形变数据（2008-2018）

该数据集包括93个连续及流动GPS台站记录的2008年Mw7.9汶川地震震后10年累积三维形变量。GPS日采样时间序列数据主要来自中国地震局网站（http://www.cgps.ac.cn/）和已发表文章：Diao, F., Wang, R., Wang, Y., Xiong, X., Walter, T.R. (2018), Fault behavior and lower crustal rheology inferred from the first seven years of postseismic GPS data after the 2008 Wenchuan earthquake, Earth Planet. Sci. Lett., 495, 202-212, doi: 10.1016/j.epsl.2018.05.020. 我们处理震后形变数据如下：首先矫正和汶川地震无关的其他影响，例如季节变化，年际变化，板块效应等；再次，通过指数函数和对数函数拟合震后时间序列曲线；最后，通过拟合曲线计算任意时间段震后形变量。震后10年累积形变高达近21厘米。水平方向精度不低于1.7厘米，垂直方向不低于4厘米。

This dataset contains 10-year cumulative 3-dimensional postseismic deformation recorded by 93 continuous and campaign GPS stations following the 2008 Mw 7.9 Wenchuan earthquake. The daily-sampled GPS time series data were mainly sourced from the website of the China Earthquake Administration (http://www.cgps.ac.cn/) and the published paper: Diao, F., Wang, R., Wang, Y., Xiong, X., Walter, T.R. (2018), Fault behavior and lower crustal rheology inferred from the first seven years of postseismic GPS data after the 2008 Wenchuan earthquake, Earth Planet. Sci. Lett., 495, 202-212, doi: 10.1016/j.epsl.2018.05.020. We processed the postseismic deformation data via the following steps: First, we corrected for non-seismic influences including seasonal variations, interannual variations, and plate tectonic effects; Second, we fitted the postseismic time series curves using exponential and logarithmic functions; Finally, we calculated the postseismic deformation for any given time period based on the fitted curves. The maximum cumulative postseismic deformation over the 10-year period reaches nearly 21 cm. The measurement accuracy is no less than 1.7 cm for the horizontal direction and 4 cm for the vertical direction.

搜集汇总

背景与挑战

背景概述

该数据集包含2008年汶川地震后10年（2008-2018）的震后形变数据，基于93个GPS台站记录的三维累积形变量，通过处理矫正了季节变化等无关影响，并采用函数拟合方法计算形变，累积形变高达近21厘米，精度在水平方向不低于1.7厘米、垂直方向不低于4厘米。数据以申请方式共享，适用于固体地球和形变观测研究。